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get user input for filename to open

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get user input for filename to open

 
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  #1
Jul 21st, 2009
i want the user to enter the name of the file to open and i want it in c++, i have seen a similr work done in vc but i m nt abl 2 implement da same in c++
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Re: get user input for filename to open

 
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  #2
Jul 21st, 2009
Could you post your own try first?
"Never argue with idiots, they just drag you down to their level and then beat you with experience."
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Re: get user input for filename to open

 
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  #3
Jul 21st, 2009
[char name[100];
ifstream infile;
cout<<"Enter filename>>";
gets(name);
infile.open(name);]

this is my code segment that is not working. i suppose i am missing something
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Re: get user input for filename to open

 
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  #4
Jul 21st, 2009
I'm going to give you the code.
You're going to study it

C++ Syntax (Toggle Plain Text) 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main( ) {
  5.     cout << "Please enter a file name: \n";
  6.     string name;
  7.     cin >> name;
  8.     ifstream ist(name.c_str( )); //c style strings are required by some system interfaces
  9.     if(!ist) cerr << "Can't open file!\n"; // if the file failed to open
  10.     cin.clear();
  11.     cin.get();
  12. }

This doesn't actully do anything with the file, but it opens the file that the user requests.

I havn't tested it, so you might have to fix it up. Have fun!
Last edited by tomtetlaw; Jul 21st, 2009 at 8:30 am.
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Re: get user input for filename to open

 
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  #5
Jul 21st, 2009
thank you for the code but my compiler does not accept 'string' data type
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Re: get user input for filename to open

 
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  #6
Jul 21st, 2009
Just use char then
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Re: get user input for filename to open

 
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  #7
Jul 21st, 2009
can you please tell me what the last 2 lines of the code are there for?
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Re: get user input for filename to open

 
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  #8
Jul 21st, 2009
cin.clear() is for throwing away 'enter' (the button you pressed to enter the file name)

cin.get() is to tell it to wait for the user to press enter to close the window.

just ask away if you have any more questions
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Re: get user input for filename to open

 
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  #9
Jul 21st, 2009
Tomtelaw, you forgot to add the following line to your code: #include <string>
"Never argue with idiots, they just drag you down to their level and then beat you with experience."
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Re: get user input for filename to open

 
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  #10
Jul 21st, 2009
tux4life, it's included in <iostream> .... I think

EDIT: Woops, you're right lol sorry
Last edited by tomtetlaw; Jul 21st, 2009 at 9:02 am.
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